Several people have helped me. One person is being a dick head.
https://signaturesolar.com/growatt-120-240v-6kw-grid-tie-inverter/ requires an auto transformer even for grid tied application. Support from growatt is lacking. That's why I've reached out here. In fact, I was pointed to the installation documentation which provided the answer for me. I'm okay finding it if pointed to it.
It's cute though that Majic has since deleted all his toxicness.
And if I happened to quote Majic's misinformation, he was incorrect. Signature solar currently sells v3 not v2 if that matters to anyone. It does not matter to me though.
And what am I'm not sure that I'm talking about? Help me if I'm so far off. Right?